Embedding a digitized watermark upon colored image using wavelet transform with comparative technique

الملخص EN

A special methodology for adding a watermark for colored (RGB) image is formed and adding the wavelet transform as a tool during this paper.

The watermark is added into two components.

The primary one is by taking the key that contain associate eight range from (0...7) every range in it determines the actual bit position in specific component of canopy image.

If that bit is analogous to the bit in watermark, (0) are hold on within the Least Significant Bit (LSB) of the watermarked image; otherwise (1) are hold on.

The other is that it will add multiple secret keys victimization shift and rotate operations.

The watermark is embedded redundantly over all extracted blocks in image to extend image protection.

This embedding is completed within the frequency domain using wavelet transform.

This improved algorithm incorporates wavelet transform to supply high security for two reasons, the embedded bit won't be hold on in LSB directly and this approach can use multiple secret keys.